Cleaning of hollow instruments

Cleaning of hollow instruments

Zuijdweg, J.M.A.

Dankelman, J. (mentor)
Van den Dobbelsteen, J.J. (mentor)

Mechanical, Maritime and Materials Engineering

BioMechanical Engineering

bmd

2014-11-05

Since a few decades, the use of Minimally Invasive Surgical (MIS) instruments has increased very fast. Minimally Invasive Surgery usesmuch smaller incisions compared to the traditional open surgery. The procedure is less invasive than open surgery and there is minimal damage to biological tissues at the point of entrance of the instrument. This results in a quicker healing for the patients and a shorter hospital stay. The downside of these reusable MIS instruments is that they are more difficult to clean than conventional surgical instruments. MIS instruments consist ofmostly narrow channels and therefore they are also called hollow, or cannulated instruments. Narrow channels are ideal places for human tissues, residuals and bacteria to nestle. This offers a challenge to the Central Sterile Supply Department (CSSD) in cleaning these instruments on the outside as well as on the inside. During the automated cleaning process, hollow instruments are rinsed on the inside in a washer-disinfector. In order tomake this possible, these instruments have to be connected to the washer-disinfector. The aim of this study is to get more insight into the cleaning performance of several cleaning applications for hollow instruments based on their mechanical performances, expressed as flow and pressure through an instrument. A cleaning application is a device that connects a hollow instrument to the washer-disinfector. At present there are several applications and cleaning methods available without the knowledge for which instruments they are most suitable, and what their effect is on the cleanness of the instrument. In this study a comparative analysis is made of cleaning applications of hollowinstruments at the CSSD. The study is limited to the first phase of the decontamination process; the cleaning process. This study focuses on the mechanical performance (flow and pressure) of a cleaning application. The mechanical performance was recorded by a measurement system that was able to measure flow, pressure and temperature in eight separate channels at the same time.

holow instruments
lumen
cleaning process
CSSD
mechanical performance
minimally invasive surgery
medical instruments

http://resolver.tudelft.nl/uuid:07f17824-374d-456a-9e41-6903fc2cb3ac

2017-11-05

Student theses

master thesis

(c) 2014 Zuijdweg, J.M.A.